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H; 'VAN HOEVENBERGH.

PRINTING TBLEGRAPH.

lNo. 316,677. Patented Apr. 28, 1885.

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H. VAN HOBVENBERGH.

PRINTING TBLBGRAPH. No. 316,677. Patented Apr. 4.28, 1885.

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PRINTING TELBGRAPH; Y No. 316,677. 'Patented Apr. Z8, 1885.

wnNEssEs INV'ENTOR N4 PETEIISy Pholulhogmpmr, wnhington. D. c,

(No Model.) 4 sheets-snm 4.

H. VANV HOBVENBERGH. PRINTING TELEGRAPH.

lvm-316,677. Patented Apr. 2,8, 1885.

WITNESSES v NVENTOR %,3 Hny VnHom/ehberg/z Ly hier Harney/.5'

UNirE p rares i armar tricem HENRY VAN HOEVENBERGH, OF ELIZABETH, NEV JERSEY, ASSIGNOR TO THE BALTIMORE di OHIO TELEGRAPH COMPANY, OF BALTIMORE, MD.

PRINTING-T SPECIFICATION forming part of Letters Patent No. 816,677, dated April V28, 1885.

Application filed August 7, 1894. (No model.)

To .all whom it may concern:

Be it known that l, HENRY VAN HoEvEN- BERGH, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Printing- Telegraph Instruments, of which the following is a specification. Y

` My invention relates to the class of apparatus employed for telegraphically transmitting messages through the agency of electric impulses or currents, and ei'ectinga record of the same from one or more type-wheels.

The object of the invention is to provide convenient and eflicient means for advancing the type-wheels step by step, effecting impressions therefrom, and to insure that the type-wheels shall always be in unison with the transmitting apparatus.

The invention consists in organizing the apparatus in substantially the following` manner The type-wheel is carried upon a shaft which is automatically advanced through the agency ofsuitable clock-work. Applied to this shalt is an escapement-shaft carrying a scapewheel. The scape-wheel i's provided with an escapementanchor, the movements of which are controlled by means of an electro-magnet responding to electric impulses transmitted over the main line. The scape-wheel is so organized that each complete vibration of the escapementanchor permits a sufficient advancement of the typewheel to bring a succeeding type above the printing-platen. The escapeinent-anchor is constructed with a rigid pallet carried upon the armaturelever of an electro-magnet and with a second pallet which is pivoted to the lever. The second pallet is normally pressed by a spring toward the other pallet, and is thus held. in such a position that the two pallets engage the teeth of the wheel in the usual manner when the lever is vibrated. `The arm carrying the second pallet extends into the path of a finger carried upon the lever of Aa, second electro-magnet. When this second,electro-magnetis vitalized,

. the pallet is thrown out of engagement with the scape-wheel, which is thereby permitted to revolve freely. The same device which re- `5o leases the scape-wheel also releases a mechanism organized to impel the printing-platen to- .ward the type-wheel, and to thus cause animthe agency of the second electro-magnet, but

the feeding device is so constructed that the tape remains at rest during the time animpression is being taken. The second electro- `magnet which thus controls the operation of printing, effecting the unison and feeding the paper,is included in a local circuit. The connections of the local circuit are interrupted so long as the typewheel stands at its unison-l point, and during the operation of the escapement-lever the contact-point, through which the local circuit is designed to be completed, is vibrated with such rapidity that the circuit-connections are not established a sufficient length of time to permit the electro-maghetto become vitalized. When, however, the escapement-lever is allowed to rest, any desired type having been caused to confronttheplaten, 8o the local circuit will remain completed through the second electro-magnet,its armature will be actuated,and the movements above described will be effected.

In the accompanying drawings, which il 85 lustrate my invention, Figure l is a plan View of acomplete instrument, and Fig. 2 is a side elevation of the same. Fig. 3 is a side eleva-` tion of certain parts of the mechanism, the frame being removed. Figt 4 is an end view 9o of a portion of the mechanism,showing the type-wheel and escapement-shafts. Fig. 5 is a side elevation showing certain details in the organization of the-scape-wheel-releasing and circuit-controlling devices, together with the local circuit-connections. Fig. 6 is an end view of a portion of the instrument, showing the organization of the paper-feeding devices. Referring to the figures, A represents the base upon which the instrument is supported, rco

and B represents the frame of the instrument. In this vframe are carriedy two coil-springs, c a2, which are designed torespectively afford power for revolving the type-wheel C and for actuating the printing-platen and unison device. The spring a operates through a wheel, as, in the manner usually adopted in clock-movements to act-uate a train of gearwheels, and thus to impel the type-wheel@ in the direction indicated by the arrow. The type-wheel C is carried 'upon a shaft, c', and this shaft is geared through a wheel, c, and pinion c3, with an escapement-shaft, c4. The shaft o* is provided with a scape-wheel, d, which is engaged by the pallets e and e2 of an escapement-anchor, E. The escapement-anv chor is applied to an armature, e3,carried upon a lever, e4, and this armature is in turn applied to an electro-magnet, M', which is ineluded in the main-line circuit and is designed to respond to electric impulses transmitted from the sending-station. Each time the electro-magnet M is vitalized thel escapementanchor is moved so that the pallet e releases the wheel d, but that wheel is immediately engaged by the pallet e2. When the magnet M is demagnetized, the pallet eI releases the wheel and the pallet e engages the succeeding tooth of the scape-wheel. The advancement of the scape-wheel d, which is thus occasioned, permits a sufficient revolution of the type-wheel to bring a succeeding type above the printing-platen p. In this manner, by vibrating the escapenient-anchor E, any desired -character upon the type-wheel may be brought into position to print.

For the purpose of effecting an impression of any character which has been thus caused' to stand above the platen p, I employ an electro-magnet, m', which is included in a local circuit, as is indicated in Fig. 5, by the conductors 1 and 2. The conductor 1 is connected from a battery, o,with one terminal of the coils of the electro-magnet M. The conductor 2 leads from the remaining terminal of these coils to an arm, f, which carries a contactpoint, f. The point f is designed to rest in electrical connection with the point f2 when it is desired to print, thereby completing the connections of the battery o and causing the electro-magnet` m to be vitalized. For the purpose, however, of preventing the local cir- 'cuit from being thus completed a sufficient time to vitalize the electro-magnet during the operation of bringing the desired type into position to print, the arm f is carried upon an arbor, f3, which also carries an arm, f4, extending into proximity to atoothed or cam wheel, f5. This wheel is mounted upon the shaft 'c4 of the scape-wheel. Upon the arm f4' .is carried a pin,f6, which is designed to be engaged by the successive teeth of the cam wheel f5, and to be thrown upward thereby during the movement ofthe scape-wheel shaft. The upward movement of this arm serves to throw the pin f away from the stop f2, thereby preventing a continued contact during the advance movement of the type-wheel. The duration of the contact which is' thus made is insuflicient to permit the electro-magnet m to become vitalized, and its armature t will therefore not be actuated. When, however, the type-wheel is brought to rest with any one of its characters presented to the platen p, the circuit will remain closed and the electro-magnet will become vitalized. It will be obvious, however, that it is not desirable that the local circuit should be completed while the typewheel is standing at its unison-point. For this reason a pin, f7, is carried upon the typewheel shaft in such a position that it will engage an arm,'f3, extending from the armft, when the type-wheel is at its unison-point,` and thereby hold the point away from the stop f2. The first advancement of the type-wheel, however, will carry this pin out of engagement with the extension f.

The operation of printing when the electromagnet m is allowed to be vitalized will now be described.

The printing-platenp is carried on a lever, l?, and this lever is suppoi ted upon an arbor, p. The arbor p also carries an arm, p2,which extends beneath a cam, p3, carried upon an arbor, p4, of the train of gear a5,which is actuated by the spring a2. Vhen the arbor p* is permitted to revolve in the direction indicated by the arrow, (see Fig. 3,) the camp3 throws the arm p2 downward against the tension of a spring, p5, (see Fig. 4,) and causes the platen p to be thrown upward against the typewheel. An impression will therefore be effected of the particular character which is presented to the platen. v

For the purpose of advancing the paper tape beneath the type-wheel as may be required when the impressions are effected, I'

axis, h5. (See Figa-I.) Aspring,h6,surround,

ing this axis, serves to normally press the paper roller h3 against the roller h2. For the purpose, however, of preventing the=paper tape from being advanced at the moment 'an impression is being taken, I provide the following devices for raising the roller h3 from the roller h2 at the moment the platen p is impelled toward the type-wheel. rIhis device consists of an arm, hl, extending from the axis h5, (see Fig. 6,) and resting upon a toothed wheel or pinion, hwhich is carried upon the arbor h. The teeth of this pinion are caused to pass beneath the arm h7 at the moment the The roller h3 is carried IOO IIO

cam p raises the platen p. The roller h3 is thus lifted from the paper tape, and therefore, al-

j though the wheel h'l be revolved, the tape will not be advanced. Immediately after an impression has been effected the roller h3 is permitted to again fall against the paper tape, and to thereby cause` it to be advanced. There will be therefore a slight forward movement of the paper immediatelyV before an impression is taken. v1t will then stand at rest until the impression is effected, whereupon a further advancement will be occasioned.

The unison of the type-wheel is effected in the following manner: After each impression that is taken it is designed that the type- Wheel shall ne revolved to and automatically arrested at its unison-point. This is accomplished by causing the pallet e to v be automatically thrown out of engagement with the scape-wheel d without at the same time causing the pallet e2 to be thrown into engagement with the wheel when the impression has been made. For this purpose the pallet e is carried upon a pivoted arm, k. A spring, k2, acting upon an arm, k, normally holds the pallet e toward the pallet e2, but permits of a sufficient movement of the same to cause it to release the wheel d, while the escapement-lever E remains in its lower position, as shown in Fig. 3. The spring k2 is for this purpose carried upon the escapement-lever E, and at its extremity it carries a point, 7c3, which normally presses against one side of a right angle carried upon the arm la". When, however, the arm 7a4 is forcibly moved upward, the spring k2 yields sufficiently to allow the point k3 to pass the angle 705 and to engage the other side of the angle, thereby retaining the pallet out of engagement with the wheel until itis again forcibly moved into its first position. For the purpose of thus forcibly throwing the pallet out of engagement with the scape-wheel d when c an impression has been effected, an arm, r,

extends from an arbor, r, into such position as to engage an extension, k6, carried upon the arbor 7c of the arm k. Vhen the arm r' is forced downward, it forces the pallet e out of engagement with the wheel. The armo" is actuated by means of the cam p3, which is employed for effecting impressions immediately after the platen p has been actuated. For this purpose an arm, u, ext-ends from the arbor 1" into proximity to the shaft p4, and a projection, r, carried upon the arm r2, extends into the path ofthe cam p3. The revolution of the cam p3 when the train of gear is released throws the arm r2 upward, thereby acting through the arms r and la to release the wheel d from the pallet e. The type-wheel' shaft will in this manner be revolved to its unison-point, at

' which point it will be automatically arrested by means of `a device which is employed for lautomatically throwing the pallet e again into engagement with the scape-wheel d. An arm, s, projects from the type-wheel shaft c toward an arm, s', extending from the pallet-arm k. When thepallet e is thrown out of `engage- The diately before the-type-wheel reaches its uni# son-point, and the arm s is thereby thrown downward', causing the pallet e to be again thrown into the path of the scape-wheel, there-A by arresting the type-wheel at its unison-point.

The type-wheel is preferably so constructed that a blank space is left at the point which is brought above the platen by the first vibration of the escapementanchor after it has been brought to unison. This construction is de sired for the reason that it is impossible to actuate the printing mechanism while the type-wheel is at its unison-point, and it is therefore necessary that the blank or spaceplace be other than the unison-point of the type# wheel. upon the wheel. that those characters which are more frequently employed in printing It is desirable to so arrange the type od whereby the mechanism which is thus emj ployed for effecting the impressions, feeding4 the paper, and releasing the type-wheel, is set in operation.

The electro-magnet m is, as has already been stated, constructed to respond only when the contact-point f is allowed to rest againstthe stop f2. When, however, this magnet is vitalized, its armature t is drawn 4forward against the force of a retractile spring, t2, which is applied to its armature-lever t, The long arm of the lever t3 carries a detentor catch, t, which is normally held in the path of an arm, u, which is carried upon the shalt p4. So long as the electro-magnet m is not vitalized the shaft pL isprevented from revolving, and thus the train of mechanism a5, which is driven by the springv a2is held at rest. is vitalized, the stop t4 is thrown out of the path of the arm o, andthe arbor p is permit` ted to revolve, and to effect thus the operations which have already been described. 4 It is evident, however, that it is desirable that the stop t beimmediately thrown again into When, however, the electro-magnet m` IOO IOS

the path of the arm c after it has been rei leased, so that the arbor p* may not complete more than one revolution. For this purpose an arm, w, (see Fig. 5,) is carried upon the ar` tro-magnet and place thestop L* inthe path of the arm u. The electro-magnet mwill also be automatically demagnetized by the interruption of the circuit of the localbattery o assoon as the type-wheel is released and it commences to move toward its unison-point. VThis result will be accomplished by reason of the movement of the cam-wheelf5 beneath the` projection f6, thereby throwing the point.

j" away from the stop f'l in the manner already. described.

' I claim as my invention- 1. The combination, substantially'as here- ,5 inbefore set forth, with a type wheel, and

means, substantially such as described, tendi-ng to advance the same, of a scape-wheel for l permitting a step-bystep movementv of said type Wheel, two independent shafts upon 1o which said scape-Wheel and type-Wheel are mounted, an electro-magnet for releasing said scape-Wheel from its anchor, a local circuit in which saidelectro-magnet is included, a cam- Wheel moving with said scape-Wheel, an arm 15 resting upon said cam-Wheel and receiving therefrom a to-and-fro movement, and a contact-point through which the connections of y 1 said local circuit are eompleted,which contactpoint is prevented from remaining .in a posi- 2O tionto complete said local c ircuit While said scape-Wheel is being actuated.

. 2. The combination, substantially as hereinbefore set forth, With a type-wheel and its shaft, of a scape-Wheel, an escapement-anchor 25 for permitting said scape-wheel toadvance step by step, and an electro-magnet for controlling the movements of said escapementanchor, a second electro-magnet for causing said anchor to release said scape-Wheel, and a 3o printing-platen for effecting impressions from said type-Wheel, which platen is actuated when said second electro-magnet is vitalized. 1 3. The combination, substantially as hereinbefore set forth, with a type-Wheel and a 3 5 type-Wheel shaft, of a scape-wheel, an escapecontrolling said mechanism, and means, substantially such as describedffor causing the electro-magnet to be vitalized only when said type-Wheel has been brought to rest.

4. l.The combination, substantially as herev inbefore set forth, with a type-Wheel, a scapewheel, an escapement-anchor for controlling 5o the movements of said scape-Wheel, and means for controlling the movements of said anchor, of aprinting-platen for effecting impressions from said type-wheel,mechanism, substantially such asdescribed, foractuating said printing-platen,

55 a paper-feeding device controlled by the same mechanism, and means, substantially such as described, for actuating said paper-feeding device immediately before and immediately after an impression is effected, and for preventing itfrom being actuated during the time said printing-platen is effecting animpression.

5.' The combination, substantially as hereinbefore set forth, of a type-wheel, a scape- Wneel controlling the movements of the same,

an anchor applied to said scape-wheel, means for controlling themovements of said anchor,

a printing-platen', mechanism, substantially such as described, for effecting. impressions from said type-wheel, mechanism for operating the same, and an independent paper-feeding device consisting of two rollers, one of which is actuated by said mechanism, While the other vis actuated by impingement against the same, and means, substantially such as described, for raising the last-named roller from the first-named roller When an impression is being taken from said type-Wheel.

6. The combination,substantially as hereinbeforesetforth, With a type-Wheel and means, substantially suchas described, for imparting a step-by-step movement to the same, of a me. chanically-operated device for effecting impressions from said type-Wheel,a detent,and a stop for normally preventing said device from being operated, an electro-magnet for removing said detent from the path of said stop when `it is desired to effect an impression, and a mechanically-operated device for again forcing said detent into the path of said stop after it has been Withdrawn by the action of said electro-magnet.

7. The combination, substantially as hereinbefore set forth, of a type-wheel, a scape- Wheel, an escapementanchor for controlling the movement of said scape-Wheel, a pallet carried upon said anchor and a second pallet movably supported upon said anchor, means for holding said second pallet in either of two positions relative to the first-named pallet and normally in engagement With said scape- Wheel, and means, substantially such as described, for automatically moving said pallet from the path of said scape-Wheel. n

8. The combination, substantially as hereinbefore set forth, with an electro-magnet, and its armature and armature lever, of a scape- Wheel, two escapement-pallets applied to said wheel, one of which is xed upon said lever, While the other is supported upon an arm` pivoted to said lever, a mechanically-operated device for releasing said pivoted pallet from engagement with said scape Wheel, and ay second electro-magnet serving, When vitalized, to set said device in operation.

9. The combination, substantially as hereinbefore set forth, With an electro-magnet, and its armature and armature-lever, of an escapement-anchor, one of the pallets of which isy movable independently of the other, a scape- Wheel to which said anchor is applied, mech-v anism for forcing said movablepallet out of engagement with said scape-Wheel, a detentv which normally prevents said mechanism from'` l0. The combination, substantially as here- IOO IIO

inbefore set forth, of an electromagnet, its l capement-anchor applied tosaid scape-Wheel,

armature and armatnre-lever, a type-Wheel, a scape-Wheel for permitting a step-by-step movement of said type-Wheel, an anchor for controlling the movements of said scape\vheel, one of the pallets of which anchor is movable independently of the other, means,substan tially such as described, for releasing said scape-Wheel from said anchor by the movement of said movable pallet, and an arm moving with said scape-wheel, which serves to throw said pallet into engagement with said scape-Wheel when said type-Wheel has reached its unison-point.

1l. The combination, substantially as here-- inbefore set forth, With a type-Wheel and its shaft, of a scape-wheel for occasioning a stepbyestep movement of said type-Wheel, an esscribed my name this 26th day of June, A. D. 3o

HENRY VAN HoEvnNBnRGn. [n s] Witnesses:

DANL. W. EDGEooMB, CHARLnsA. TERRY. 

